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公开(公告)号：US20160118921A1
公开(公告)日：2016-04-28
申请号：US14520452
申请日：2014-10-22
Applicant: Semiconductor Components Industries, LLC
Inventor： Yoshihisa Tabuchi , Tomonori Kamiya
IPC: H02P25/02
CPC classification number: H02P25/034
Abstract: In accordance with an embodiment, an actuator control circuit includes a driver circuit connected to a ringing characteristic determination circuit. A signal generator that is configured to generate an output signal having first period that has first and second portions where the first portion longer than the second portion is connected to the ringing characteristic determination circuit. Another embodiment includes a method for controlling an actuator by determining a resonant frequency and a ringing amplitude of an actuator signal; generating a control signal in response to the resonant frequency and the ringing amplitude of the actuator signal; and causing the actuator to move in response to the second drive signal.
Abstract translation: 根据实施例，致动器控制电路包括连接到振铃特性确定电路的驱动器电路。 一种信号发生器，被配置为产生具有第一周期的输出信号，该第一周期具有比第二部分长的第一部分的第一和第二部分连接到振铃特性确定电路。 另一实施例包括一种通过确定致动器信号的谐振频率和振铃振幅来控制致动器的方法; 响应于致动器信号的谐振频率和振铃幅度产生控制信号; 并且致动器响应于第二驱动信号而移动。
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公开(公告)号：US20130187029A1
公开(公告)日：2013-07-25
申请号：US13714032
申请日：2012-12-13
Applicant: Semiconductor Components Industries, LLC
Inventor： Yoshihisa Tabuchi , Yasunori Nagata
IPC: G01J1/42
CPC classification number: G01J1/4228 , G01J1/18 , G01J1/44 , G01J2001/186
Abstract: A photodetector control circuit in a photodetector for detecting light from a photodiode using a phototransistor and controls drive of the photodiode and detection of a current of the phototransistor has a received light amount detecting unit that detects a detection current, which flows through the phototransistor in accordance with a received light amount, by converting the detection current into a detection voltage, and compares the detection voltage with a reference voltage detected during reception of a reference light amount, to thereby detect a change in the received light amount, a diode current control unit for controlling a diode current that is caused to flow through the photodiode, and a control unit that detects a temperature based on a forward drop voltage of the photodiode and estimates a current change rate of the phototransistor based on the detected temperature.
Abstract translation: 光电检测器控制电路，用于使用光电晶体管检测来自光电二极管的光并控制光电二极管的驱动和光电晶体管的电流的检测，具有：接收光量检测单元，其检测根据光电晶体管流过的检测电流 通过将检测电流转换为检测电压，并将检测电压与在接收参考光量期间检测到的参考电压进行比较，从而检测接收光量的变化，二极管电流控制单元 用于控制流过光电二极管的二极管电流;以及控制单元，其基于光电二极管的正向压降电压检测温度，并基于检测到的温度估计光电晶体管的电流变化率。
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公开(公告)号：US11683588B2
公开(公告)日：2023-06-20
申请号：US17643207
申请日：2021-12-08
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Yoshihisa Tabuchi
CPC classification number: H04N23/687 , G03B5/00 , H04N23/55 , H04N23/6812 , G03B2205/0007 , G03B2205/0053
Abstract: Various embodiments provide an optical image stabilization system, comprising: a sensor configured to detect a disturbance signal; a processor; an actuator; and an actuator driver. The sensor can be configured to detect a disturbance signal, wherein the disturbance signal applies a force to a moving body, and wherein the force causes the moving body to displace. The processor can be configured to determine: a target position of the moving body according to the detected disturbance signal; and a corrected driving current according to the target position. The actuator can be configured to: receive the corrected driving current receive the corrected driving current; and position the moving body in response to receiving the corrected driving current, wherein the moving body is positioned in a direction opposite to that of the displacement. The actuator driver can be configured to controllably operate the actuator according to the corrected driving current.
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公开(公告)号：US11412144B2
公开(公告)日：2022-08-09
申请号：US17301264
申请日：2021-03-30
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Yoshihisa Tabuchi
Abstract: Various embodiments of the present technology may provide methods and apparatus for optical image stabilization. The methods and apparatus for optical image stabilization may be integrated within an electronic device. An exemplary system may include an actuator control circuit responsive to a sensor and a feedback signal from an actuator. The actuator control circuit may be configured to calibrate a gain applied to a drive signal based on a relative position between the actuator and the sensor and an output signal generated by the actuator control circuit.
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公开(公告)号：US10574914B2
公开(公告)日：2020-02-25
申请号：US16002214
申请日：2018-06-07
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Yoshihisa Tabuchi , Atsushi Noda
Abstract: Various embodiments of the present technology may comprise methods and apparatus for actuator control. The methods and apparatus may comprise various circuits and/or systems to detect an induced voltage and various signal processing functions to utilize the induced voltage to control the actuator. The apparatus for actuator control may comprise an induced voltage detection circuit and adjust the actuator position according to the detected induced voltage.
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Patent Agency Ranking
16.发明授权Photodetector control circuit to control drive of a photodiode and current detection of a phototransistor 有权光电检测器控制电路，用于控制光电二极管的驱动和光电晶体管的电流检测公开(公告)号：US09063014B2
公开(公告)日：2015-06-23
申请号：US13714032
申请日：2012-12-13
Applicant: Semiconductor Components Industries, LLC
Inventor： Yasunori Nagata , Yoshihisa Tabuchi
CPC classification number: G01J1/4228 , G01J1/18 , G01J1/44 , G01J2001/186
Abstract: A photodetector control circuit in a photodetector for detecting light from a photodiode using a phototransistor and controls drive of the photodiode and detection of a current of the phototransistor has a received light amount detecting unit that detects a detection current, which flows through the phototransistor in accordance with a received light amount, by converting the detection current into a detection voltage, and compares the detection voltage with a reference voltage detected during reception of a reference light amount, to thereby detect a change in the received light amount, a diode current control unit for controlling a diode current that is caused to flow through the photodiode, and a control unit that detects a temperature based on a forward drop voltage of the photodiode and estimates a current change rate of the phototransistor based on the detected temperature.
Abstract translation: 光电检测器控制电路，用于使用光电晶体管检测来自光电二极管的光并控制光电二极管的驱动和光电晶体管的电流的检测，具有：接收光量检测单元，其检测根据光电晶体管流过的检测电流 通过将检测电流转换为检测电压，并将检测电压与在接收参考光量期间检测到的参考电压进行比较，从而检测接收光量的变化，二极管电流控制单元 用于控制流过光电二极管的二极管电流;以及控制单元，其基于光电二极管的正向压降电压检测温度，并基于检测到的温度估计光电晶体管的电流变化率。
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公开(公告)号：US20140218752A1
公开(公告)日：2014-08-07
申请号：US14249476
申请日：2014-04-10
Applicant: Semiconductor Components Industries, LLC
Inventor： Yoshihisa Tabuchi , Yasunori Nagata
IPC: G01B11/14
CPC classification number: G01B11/14 , G01B11/002 , G01J1/18 , G02B27/646 , G03B2205/0007
Abstract: A position of a lens is detected by detecting, using a phototransistor, light that is emitted from a photodiode and that varies depending on lens position. A control unit divides a moving range of the lens into a plurality of areas, approximates a relationship between lens positions and current of the phototransistor for each of the areas, corrects a current of the phototransistor using the approximated relationship so as to obtain a corrected detection current having a linear relationship with respect to lens positions, and detects the position of the lens using the obtained corrected detection current.
Abstract translation: 通过使用光电晶体管检测从光电二极管发出并根据透镜位置而变化的光来检测透镜的位置。 控制单元将透镜的移动范围分成多个区域，近似每个区域的透镜位置和光电晶体管的电流之间的关系，使用近似关系校正光电晶体管的电流，以获得校正检测 电流相对于透镜位置具有线性关系，并且使用获得的校正检测电流来检测透镜的位置。
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公开(公告)号：US11991447B2
公开(公告)日：2024-05-21
申请号：US17249742
申请日：2021-03-11
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Yoshihisa Tabuchi
CPC classification number: H04N23/687 , G02B27/646 , G03B5/00 , G03B5/02 , G03B2205/0015 , G03B2217/005
Abstract: Various embodiments of the present technology may provide methods and apparatus for optical image stabilization. The methods and apparatus for optical image stabilization may be integrated within an electronic device. An exemplary system may include an actuator control circuit responsive to a sensor and a feedback signal from an actuator. The actuator control circuit may be configured to calibrate a gain applied to a drive signal based on a measured displacement of the electronic device and an output signal generated by the actuator control circuit.
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公开(公告)号：US11223767B1
公开(公告)日：2022-01-11
申请号：US17249256
申请日：2021-02-25
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Yoshihisa Tabuchi , Tomofumi Watanabe
Abstract: Various embodiments of the present technology may provide methods and apparatus for optical image stabilization. A system may include an actuator control circuit responsive to a sensor and a feedback signal from an actuator. The actuator control circuit may be configured to calibrate a gain applied to a drive signal based on a measured difference value of the feedback signal generated by the actuator control circuit and a predetermined difference value.
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公开(公告)号：US10802244B2
公开(公告)日：2020-10-13
申请号：US16185180
申请日：2018-11-09
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Yoshihisa Tabuchi
Abstract: Various embodiments of the present technology may comprise methods and apparatus for focus control in an imaging system. The methods and apparatus may comprise various circuits and/or systems configured to measure the ambient temperature of the lens module and compute a corrected target position based on known thermal characteristics of the lens and/or the lens barrel. Factors used to obtain the corrected target position may comprise the material the of the lens barrel, the thermal time constant of the lens barrel, the linear expansion coefficient of the lens barrel, the effective focal length (EFL) of the lens, the thermal response of the lens, and/or the temperature characteristic coefficient of the EFL.
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